Intel 915G Can't get 1680x1050 to work

david rankin drankinatty at
Mon Apr 2 18:55:32 PDT 2007


    This is my first post and I'm rather stumped at the moment. I have been 
googling this issue and I can find a lot of discussion about it, but I can't 
find a solution in the archives.

    I have a new Acer AL2216W that runs native at 1680x1050. I am using the 
analog input. The install is Suse 10 with xorg-x11-6.8.2-100.2 and the card 
is an Intel 915G. The video card supports 1680x1050 natively and works well 
under M$. I cannot for the life of me get the display to work under suse 10. 
It either is stuck in 1280x1024 or when configured for 1680x1050, the screen 
extends well beyond to edge of the monitor in some sort of "virtual" 
resolution that you have to scroll the mouse to be able to find the edge of 
the screen. Also, when I provide the proper modeline created with gtf or 
others that are very similar suggested for the Dell problem, x starts fine, 
but the Monitor reports that it cannot create the display and I have to 
ctrl+alt+backspace to kill the server.

    I have installed and tried using both 915resolution and 855resolution to 
patch Mode 30 or 4d to 1680x1050 at 24 bits/pixel without success.  For 

providence:/home/david/Documents/linux/video_WideScreen # 915resolution -l
Intel 800/900 Series VBIOS Hack : version 0.5.2

Chipset: 915G
Mode Table Offset: $C0000 + $269
Mode Table Entries: 27

Mode 30 : 1680x1050, 24 bits/pixel
Mode 32 : 800x600, 8 bits/pixel
Mode 34 : 1024x768, 8 bits/pixel
Mode 38 : 1280x1024, 8 bits/pixel
Mode 3a : 1600x1200, 8 bits/pixel
Mode 3c : 1920x1440, 8 bits/pixel
Mode 41 : 1680x1050, 16 bits/pixel
Mode 43 : 800x600, 16 bits/pixel
Mode 45 : 1024x768, 16 bits/pixel
Mode 49 : 1280x1024, 16 bits/pixel
Mode 4b : 1600x1200, 16 bits/pixel
Mode 4d : 1920x1440, 16 bits/pixel
Mode 50 : 1680x1050, 32 bits/pixel
Mode 52 : 800x600, 32 bits/pixel
Mode 54 : 1024x768, 32 bits/pixel
Mode 58 : 1280x1024, 32 bits/pixel
Mode 5a : 1600x1200, 32 bits/pixel
Mode 5c : 1920x1440, 32 bits/pixel

I have edited /etc/X11/xorg.conf to include the proper modeline created with
gft to include the following:

Section "Monitor"
  Option       "CalcAlgorithm" "XServerPool"
  DisplaySize  452 283
  HorizSync    30-70
  Identifier   "Monitor[0]"
  ModelName    "1680X1050 at 60HZ"
  Option       "DPMS"
  VendorName   "--> LCD"
  VertRefresh  59-63
  UseModes     "Modes[0]"

Section "Modes"
  Identifier   "Modes[0]"
  Modeline "1680x1050"  147.14  1680 1784 1968 2256  1050 1051 1054 
087  -HSync +Vsync

Section "Screen"
  DefaultDepth 24
  SubSection "Display"
    Depth      15
    Modes      "1680x1050" "1600x1024" "1600x1000" "1400x1050" "1280x1024"
"1440x900" "1280x960" "1280x800" "1152x864" "1280x768" "1024x768"
 "800x600" "768x576" "640x480"

The only thing else that looks promising is to try the "NoDCC" option. Does 
anyone have this video card/monitor combination? Does anyone else have any 
suggestions?? Do I need to download drivers from Intel?? I know enough to be 
dangerous when compiling from scratch to replace modules, etc., but if 
required, I'm willing to try. Here are the current modules and what is 
reported on the pci bus.

providence:/home/david/Documents/linux/video_WideScreen # lsmod

Module                  Size  Used by

i915                   23680  2

drm                    70932  3 i915

speedstep_lib           8452  0

freq_table              8832  0


providence:/home/david/Documents/linux/video_WideScreen # lspci

00:00.0 Host bridge: Intel Corporation 915G/P/GV/GL/PL/910GL Processor to 
I/O Controller (rev 04)

00:01.0 PCI bridge: Intel Corporation 915G/P/GV/GL/PL/910GL PCI Express Root 
Port (rev 04)

00:02.0 VGA compatible controller: Intel Corporation 82915G/GV/910GL Express 
Chipset Family Graphics Controller (rev 04)

00:02.1 Display controller: Intel Corporation 82915G Express Chipset Family 
Graphics Controller (rev 04)


It is frustrating looking at a "squished" screen or one that extends 4 in. 
beyond the side of the monitor.

Thanks in advance and any advise, help or thoughts will be greatly 

David C. Rankin, J.D., P.E.
510 Ochiltree Street
Nacogdoches, Texas 75961
(936) 715-9333
(936) 715-9339 fax

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